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Date: Wed, 16 Jun 2004 14:46:40 +0200
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: Macros "major" and "minor"
Message-ID: <20040616124640.GD25094@cygbert.vinschen.de>
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References: <40CEEE7C DOT 8050405 AT aass DOT oru DOT se>
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On Jun 15 14:41, Martin Magnusson wrote:
> I recently ran into problems when compiling a matrix library containing 
> a function called "minor". Apparently, the file 
> /usr/include/sys/sysmacros.h has the following definitions:
> 
> #ifdef __CYGWIN_USE_BIG_TYPES__
> #define major(dev) ((int)(((dev) >> 16) & 0xffff))
> #define minor(dev) ((int)((dev) & 0xffff))
> #define makedev(major, minor) (((major) << 16) | ((minor) & 0xffff))
> #else
> #define major(dev) ((int)(((dev) >> 8) & 0xff))
> #define minor(dev) ((int)((dev) & 0xff))
> #define makedev(major, minor) (((major) << 8) | ((minor) & 0xff))
> #endif
> 
> Defining macros with names like "major" and "minor" is really not good, 
> IMO. This should probably be changed, if possible.

They are defined the same way on Linux or BSD.  They are also pulled
in there simply by including sys/types.h or another include file which
in turn includes sys/types.h.

Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Co-Project Leader          mailto:cygwin AT cygwin DOT com
Red Hat, Inc.

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